Pontiac G8 2008-2010 - MagnaFlow Cats

Has anyone just put on Cats to see what kind of gains they get? I have seen plenty of cars gain 25-35whp with headers and cats but wondering if just cats for the price would be the cheap way to go for now. I am debating getting some high flow cats from Magnaflow for the G8. $90 a piece thru Jegs. Pretty cheap and I have an exhaust guy that can put them on for me.

Any input would be appreciated. Thanks
Shawn

go with solo...stock DP is very restrictive.

Its almost $700 for solo's DP and cats. Cant spend that kind of money right now on essentially just cats.

ya that's pricey, I used my tax return on cats and exhaust.

What for a G8 isn't expensive? It is about 400 for a short throw shifter!